Facebook introduces opt-in encryption for Messenger chats
Facebook has launched ‘secret conversations’ for its Messenger application, allowing users to opt in for encrypted end-to-end conversations. In addition, both parties in a secret conversation have a device key that they can compare to verify that the messages are end-to-end encrypted. The feature also allows users to set messages to self-destruct anywhere between five seconds to one day. The use of this feature is explained by Facebook on a support page, where it is noted that secret conversations are currently only available in the Messenger app on iOS and Android (therefore not appearing on Facebook chat or messenger.com).
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